I don’t know about other stadiums, but where the White Sox play the iPhone is basically unusable during games. No voice, SMS or data usually. I have long begged for them to add WiFi, even if it’s not free. They supposedly did this season but I haven’t seen any information about it and I refuse to randomly join an open access point without knowing it’s origin.
I think Cisco is on to something huge here. Even if they charge each fan an extra dollar, I am sure they can make their money back. And if they make it something reasonable, like $5, or 10 separate days of use for $30 or something, I would be all over it.